Facebook's App Center, an App Store equivalent for Facebook applications, is launching in the coming days, according to a source briefed by Facebook on the service.

The launch date could be as soon as today or tomorrow, our source said.

The App Center gives developers a reason to stick around on Facebook because it helps users find their applications. It also incentivizes making good apps, because Facebook can highlight them and reward their hard work.

Without an app store, developers might flee to other platforms that aren't connected to Facebook — like solitary iPhone or Android apps, or apps connected to Google+.

Facebook did not comment on whether the service would be launching tomorrow or not, saying it had nothing to share.

This also might not actually happen. We've canvassed a half dozen other developers to find out — all of which knew little to nothing about a launch date.

However, we are confident in our source.

Also worth noting: Facebook is holding an "Apps and Drinks" press event tomorrow to meet with developers — which suggests that the company will unveil it around that time.

Facebook holds these events quarterly in various cities, but the timing does seem suspiciously coincidental.

Facebook revealed the App Center in early May, saying it would be coming in the next few weeks. It will include apps that are not only native to Facebook, but also Facebook-connected apps on the iPhone and Android devices, along with other platforms.

Since revealing the App Center, Facebook has been soliciting developers for screenshots and collecting assets to assure the apps in the App Center meet a certain standard for quality.

The App Center is supposed to aid in discovery of applications and spread usage as an alternative to viral promotion tactics companies like Zynga used to use. Facebook has since clamped down on that virality.